Ethernet and LWIP on STM32F769 Discovery Board configuration issue

[ED2]

Hello,

Using

• STM32CubeIDE V1.14.1
• TGFX 4.23.1
• STM32F769I-Disco Board

I want to use the ETH port to communicate with other devices.The project was generated with TGFX. I configured ETH port in RM|| mode, configured LWIP with disabled DHCP and manual IP settings, platform settings set to LAN8742. In KeyOptions changed MEM_SIZE to 14x1024Bytes. In system core:cortex M7 section i have added 2 additional sections for SRAM2(16KB and 1KB) with base Adress 0x2007C000,

After code generation, i have modified ethernetif.c:

/* USER CODE BEGIN 2 */

extern u8_t __attribute__((section(".RxPool"))) memp_memory_RX_POOL_base[];

/* USER CODE END 2 */

Additionaly i have modified flash.ld:

MEMORY

{

RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 512K

FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 2048K

QUADSPI (r) : ORIGIN = 0x90000000, LENGTH = 64M

SDRAM (xrw) : ORIGIN = 0xC0000000, LENGTH = 16M

RAM_D2 (xrw) : ORIGIN = 0x2007C000, LENGTH = 16K

}

and

.lwip_sec (NOLOAD) :

{

. = ABSOLUTE(0x2007C000);

*(.RxDecripSection)

. = ABSOLUTE(0x2007C0A0);

*(.TxDecripSection)

. = ABSOLUTE(0x2007C140);

*(.RxPool)

} >RAM_D2

 Actualy the program get stuck on MX_LWIP_Init();

in udp_port = UDP_ENSURE_LOCAL_PORT_RANGE(LWIP_RAND());

I assume there is still a problem with dynamical memory allocation?

Is there an actual working example for ETH/LWIP configuration on STM32F7? Older examples

are not compatible with actual ETH/LWIP libs from code generator.

Thanks in advance

Eduard

[SofLit · Accepted solution]

Hello,

Is there an actual working example for ETH/LWIP configuration on STM32F7? Older examples

are not compatible with actual ETH/LWIP libs from code generator.

---

Not sure what do you mean by "Older examples are not compatible with actual ETH/LWIP libs"

But the LWIP examples are located here for this board.

[ED2]

Thanks for the link with LWIP examples, it helped me to find a solution. But the  generated from CubeIDE ethernetif.c data had many differences to ethernetif.c in example.

Kind Regards,

Eduard